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Old 09-12-2011, 04:06 PM
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need help with wiring a 87' 351w into a 91' f-150

i need help with finding the main power wires so i can get spark. i am new to a convertion and don't quite know how to do it.

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Old 09-12-2011, 05:44 PM
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more info needed.
Is the 5.8 (351) injected? Was the 5.0 injected?
Are you running a carb?
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Old 09-12-2011, 08:30 PM
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I pulled a 5.8 efi from my 92 and put in a carbed 300-6. There is quite a bundle of wires no longer needed and I just found one that was hot when I turned on the key to power up my coil. I am using the efi coil and not using a resistor. The wires for the gauges are easy to sort out and should be the same, just use the sending units from the old engine. also the starter and alternator wires shouldn't change.
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Old 09-13-2011, 10:23 PM
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the 5.8L is carbed but the 5.0L was injected i need a wire diagram on how to switch the two. basicly the wire color codes for the injected into the ignition module for the carb
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Old 09-14-2011, 05:13 PM
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well... you will need the duraspark diagram,because you cant run the TFI ignition, well you can,... but you wont have any timing control without a computer.So it will be fixed at the base timing of 10 degrees, meaning it will be doggy as heck.
Also you have an EFI pump for fuel, you will need to change the setup there so you can run the mechanical pump.
go to the u pull it yard and get a duraspark ignition off of a 351, get it ALL wires connectors,module,dizzy,cap, coil and bracket , plugwires etc.
Here is the diagram,you should find a printable diagram and print it so when you go to the pullit yard you know where to cut.Note the connectors in the diagram, you want to keep all that intact. You should only have to cut one or two wires to remove the entire wiring from the donor vehicle.
This here may help a little
http://home.earthlink.net/~rcfaulcon...aspark/eec.htm
You can also google durasparkII and get lots o' results.
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Old 09-14-2011, 05:49 PM
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I went with a duraspark dist. and a GM module with the efi high energy coil. All I did was find one wire out of the bundle to power up the coil, it has to be hot for cranking too. If you wire up the stock duraspark you will need a wire that is hot for cranking to run the white wire in the module to. So basically all you need to do is find your hot leads and get the diagram for whatever ignition system you are using. Pretty simple.
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Old 09-14-2011, 06:01 PM
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I saw that here willowbilly. Pretty cool.
http://street2mud.com/forum/index.php?showtopic=99

What is really funny is the one photo shows the inside of the old ford module and it says made in XXXXXXX ...
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Old 09-14-2011, 08:33 PM
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Quote:
Originally Posted by latech
I saw that here willowbilly. Pretty cool.
http://street2mud.com/forum/index.php?showtopic=99

What is really funny is the one photo shows the inside of the old ford module and it says made in XXXXXXX ...
Great thread!! It shows how easy that conversion really is. I had the remote TFI module on the inner fender and just modified that heat sink. I must say I am really happy with this system and it fits my style because it's all junk yard parts. My truck starts first turn in any weather and runs better than I could have hoped for. I have been running it trouble free for over 3 years now.
Now I might be talking out of my hat here but I just used a hot lead out of the harness, one of several but one that was also hot cranking and I'm pretty sure not a resistor wire. If you use all the stock Duraspark system that requires a resistor wire and also possibly need to wire a 12 volt (non-resistor) wire from the starter solenoid to the coil for full 12 volts during cranking.
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Old 09-14-2011, 09:24 PM
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Also on my tryck, I could not suck fuel through the efi pump. I had to gut the sending unit and install a section of hose. I would also recommend removing the residual line pressure valve. I ended up having to that that by the side of the road. It is right off the tank sender and the fuel line hooks to it.
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Old 09-15-2011, 08:02 AM
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need help with wireing a 1992 f150 changeing out the v8 putting a strait 6 from a 1990 4x4 manuel 5 speed transmission and transfer case
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Old 09-15-2011, 12:09 PM
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Thank you for all your guys help i have tried to find main power wires and have had no luck finding the one to the key ignition switch. under my hood is covered with caked dirt and is hard to tell the difference between like white and what should be white or what should be like a cream/white color.
I have the old wire harness from the injected 302. could i run a newer "distributor" with the module located on "it" to run the engine, or would that only allow the set degree on timing to stay where i set it?
I have had previous problems with trying to keep an idol before and don't want to go through that again, to big of a pain in the you know what.
If anyone has any way they can help please do.
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Old 09-15-2011, 12:14 PM
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I had the same problem with fuel supply. i just had a friends dad you has made fuel cells for his bugs make me a fuel sell with fittings that i could just use a solid piece of hose and ran it from my fuel pump through a filter and then into the fitting on the tank.
I also put the stock ford fuel module in the fuel cell and just ran the float wire so that my gauge would work. i also just disconnected the fuel pump relay from under the hood from the main wire harness and it kept the electric pump from turning on
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